I had been riding the bicycle for exercise, and some upper-body stuff as I could,

but except for PT both of those are out, so I've been doing some walking.

Well, you may have noticed that this part of the country is both hot and humid lately, so by the time I finished the route today so was I.  

The thought "I'm getting too old for this" did come to mind.

The bad thing about a gym is there's one that was built a little over a mile from here a couple of years ago.  The problem being it's been packed every time I've driven past, morning, afternoon and evening, and I really don't want to deal with a crowd like that.  Maybe it's not that bad inside, I probably ought to check it out to find out, once I'm healed up.